Examine source code of Bread Winner Companion

{
  "manifest_version": 3,
  "name": "Bread Winner Companion",
  "description": "",
  "version": "1.4",
  "action": {
    "default_popup": "index.html",
    "default_title": "Open the popup",
    "default_icon": "bread.png"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "bread.png",
    "48": "bread.png",
    "128": "bread.png"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "bread-winner-companion@isabellee.me"
    }
  }
}